77 citations · 264 across the 21 of their papers we have counts for
4 papers · 1 filter
Unambiguous comparison of unitary channels
Michal Sedlak, Mario Ziman
We address the problem of unambiguous comparison of a pair of unknown qudit unitary channels. Using the framework of process positive operator valued measures (PPOVM) we characteri…
Repeatable quantum memory channels
Tomas Rybar, Mário Ziman
Within the framework of quantum memory channels we introduce the notion of repeatability of quantum channels. In particular, a quantum channel is called repeatable if there exist a…
Incomplete quantum process tomography and principle of maximal entropy
Mario Ziman
The main goal of this paper is to extend and apply the principle of maximum entropy (MaxEnt) to incomplete quantum process estimation tasks. We will define a so-called process entr…
Process POVM: A mathematical framework for the description of process tomography experiments
Mario Ziman
In this paper we shall introduce the mathematical framework for the description of measurements of quantum processes. Using this framework the process estimation problems can be tr…